Pump gear for windmills



Sept. 20, 1938.

W. UTRECHT PUMP GEAR FOR WINDMILLS Filed Nov. 15, 1935 2 Sheets-Sheet l WM am UV \2 YEX \zht

Sept. 20, i938. w. UTRECHT PUMP GEAR FOR WINDMILLS 2 Sheets-Sheet 2 Filed Nov, 15, 1935 W111 am Um Ti -J Patented Sept. 20, 1938 UNITED STATES PATENT OFFICE}.

2,130,780 PUMP GEAR FOR WINDMILLS William Utrecht, Tampa, Fla.

Application November 15, 1935, Serial .No. 49,861

r 3 Claims. (01. vet- 4.4)

The primary object of this invention is to pro vide an improved pump gear for windmills in which forces and weights are balanced and in which friction is reduced to a minimum amount, enabling the device to perform its work efficiently and smoothly.

A further object is to provide a duplex gearing "which will cause balanced pump rods to lift water substantially continuously.

The device is further adapted for connection at will either to the pumping gearing or to a generator of electric current or to both when suflicient power is available. I I

Another important feature of the invention is the arrangement of the gears in a closed casing for lubricant and the provision of simple and effective means for mounting the casing for free rotation upon a tower top in a compact form presenting small resistance to the wind.

Other objects and advantages of the invention will appear in connection with the description of a preferred embodiment of the invention illustrated in the drawings forming part of this specification, in which Figure 1 is a side elevation with parts in section and with parts broken away and omitted; Fig. 2 is a vertical sectional View looking from left to right in Fig. 1 parts in elevation; Fig. 3 is .a plan view of the device omitting the generator hood and the parts below it, the gears being in section; Fig. 4 is a horizontal section on .an enlarged scale of the guides and cross-heads when they are opposite each other at halfustroke; and Fig. 5 is a dia-' grammatic section showing one manner in which 1 the pump rods may be used to operate a pump.

A gear casing I is provided on opposite sides with roller bearings=2 and 3 for bevel gears 4 and 5, and. at one end of the casing, there are bearings 6 and I for the shaft 8 of a bevel gear 9 interposed between the gears 4 and 5 and in mesh therewith. The casing I may conveniently be made in sections, an upper section I0 being placed upon the lower section after the gears and their bearings are set in. their assembled position, and

secured to the lower section as by screws II.

The section I0 may have at each end spaced lugs 12 and I3 to receive and holdguide elements I4 and I5 which .are connected at their upper ends by cross braces I6. The guides I4 and I5 are shown as relatively flat bars of considerably greater breadth than thickness. A cross-head I'I is mounted to slide vertically upon the guides,

the cross-head and the guides. .A second crosshead I9 is also mounted for vertical sliding movement on the same guides, the metal being bent as indicated to hold the blocks W of Babbitt metal in engagement with the inner *edges'of the guides.

The cross-head I! has a stud 20 near its upper end to which is pivoted a connecting. rod 2|, the lower end of which is pivotally mounted on a wrist pin 22 secured upon the inner face of the gear 4. The cross-head I9 has near its upper "end a swivel block 23 having one end formed as a pivot stud 24 to receive the upper end of the .connecting rod 25, the lower end of which is pivotally mounted on a wrist pin 25 secured upon the gear 5 at the same distance from the center of its gear as the pin 22 is from the center of its gear 4. The swivel block 23 isadapted to receive the upper end of a pump rod 21 about whichit can rotate freely as the casing I turns on its pivotal bearings. at 28 and adjustable holding nuts at '29. Near the lower end of the cross-head I! is a swivel connection 3|! adapted to engage a collar 3 I on the upper end of the tube 32 which surrounds :the

pump rod '21. Surrounding the tube 32 is another tube 33, the lower end of which is secured in the casing Land the upper end of which is somewhat above the upper edges of the gears 4 and 5.

In the under side of the casing l, a pivot "tube 34 is secured coaxially with the tube 33, this :tube 34 being of sufiicient internal diameter to permit free movement of the tube 32. As shown, this tube 34 is screw-threaded for engagement within a central boss 35 which carries the cone 36 of a roller bearing, the cup 3-! of which is mounted within a recess in the top of a cap piece 38 bolted to the upper ends of the angle irons '39 at the top of the tower which carries the windmill. The tube 34"extends downward from the cap 38 to and through a bearing member 40 which acts as a brace connecting the angle irons 39 at a considerable distance below the cap 38. This member 40 holds the cup 41 of a bearing-and the cone 42 of the bearing is held on the lower end of the.

rotation of the casing and prevents it from ilifting off the cap.

Mounted within the extension of the casing I shown at the right in Fig. 1, and in axial alinement with the shaft 8 is a stub shaft 44 having roller bearings 45 and 46. The adjacent ends of the shafts 8 and 44 are each formed with spline Antifriction washers are indicated grooves 41 for engagement with a sliding clutch element 48 shown as out of engagement with shaft 8 but which can be slid at willonto the end of that shaft by operation of a clutch-shifting fork 49 slidably carried by the casing and actuated in any suitable manner by means not shown.

Centrally mounted on the shaft 44 is a bevel gear 50 having its hub internally grooved to receive a sliding clutch element 52 splined upon the shaft 44 and actuated by a shifter fork 53.

With this gear 5|] is engaged a gear 54 mounted on the shaft 55 of the generator 56. A windwheel hub 51 is secured at the outer end of the shaft 44 to receive any desired'type of windwheel, none being shown. The usual vane of any desired type will of course be held on the opposite side of the casing from the windwheel, but since the wheel, the vane, and the operating devices for moving them, for applying a brake, and for shifting the shifter forks form no part of the present invention, illustration has been omitted since they can readily'be supplied by any person familiar with the art. i

A sheet metal hood is indicated as covering the main portion of the casing as a protection for the guides, the cross-heads, the gears, and the oil from the weather, and this hood also serves to brace the guides at the top by engaging a fastening means 59 secured to the cross braces I6. An-

1 other hood 60 covers the generator.

When the clutch member 48 is slid upon the adjacent ends of the shafts 8 and 44 to couple them for joint rotary movement, it is evident that rotation of the windwheel will drive the gear 9, which, because of its engagement between the gears 4 and. 5 will drive these gears in opposi e directions. The gears are so assembled that the wrist pins 22 and 26 are in the same vertical plane when one is at the top and the other at the'bottom of its cycle, which, since both bevel gears are of the same diameter, results in each wrist pin remaining in the same vertical plane with the other during their entire rotation. The crossheads are thus driven in opposite directions and balance each others weight at all times. The

pump rod 21 and the pump tube 32 being car-- ried by oppositely moving cross-heads will of course move in the same manner, one being pulled upward as the other is forced downward. The weight of the descending member balances the weight of the rising member so that the water is the only unbalanced weight to be lifted.

As indicated in Fig. 5, the tube32 may carry a cross-head Bl having secured near opposite ends pump rods 62 and 63, the upper ends of which are guided by a cross bar 64 and the lower ends of which carry pistons 65 operating in cylinders 66. The pump rod 21 carries apiston 5T operating in a cylinder having a bore equalin cross The arrangement described provides a simple, inexpensive, and compact mechanism in which 7 all parts are free to move with little friction."

The irregularity in speed caused in ordinary windmill pumping systems by the lifting action imposing a load during only one half of the stroke or less being substantially avoided.

The outlet tube 33 having its upper end above the gears and above the point to which oil will rise prevents waste of oil while permitting utter freedom of movement of the pump rods in their reciprocation.

The continuous pumping action substantially doubles the amount of water that can be raised in the same time over the single action types in common use, without corresponding increase in cost.

The balancing of forces and weights avoids the lost work consumed by lifting the weight of the pump rod, since the downward movement of the rod in the ordinary devices does no useful Work.

It will be evident that the present invention lies in certain general principles of arrangement and not in the specific details. of construction shown and described for purpose of illustration, it being obvious that changes may be made in form, proportions, and details of arrangement and structure without departure from what is claimed.

I claim:

1. A pump actuating mechanism comprising a pair of spaced guides, an inner cross-head slidable upon the inner surfaces of said guides, an outer cross-head slidable upon the outer surfaces of said guides, a pair of gears, a wrist pin carried by each of said gears at equal distances from their centers, a connecting rod pivotally connected to the wrist pin of one gear and to the inner cross-head, a second connecting rod pivotally connected to the wrist pin of the other gear and to the outer cross-head, and a gear connection between the pair of gears driving them in opposite directions with the wrist pins in a common vertical plane throughout their rotation.

2. A pump actuating mechanism comprising a pair of spaced guides, an inner cross-head slidable on said guides, an outer cross-head slidable upon said guides, apair of bevel gears each having a wrist'pin upon its inner surface, said wrist pins being at equal distances from the centers of said gears, a. connecting rod pivoted to each wrist pin and to one or the other of said crossheads, and a third bevel gear interposed between said pair of gears to drive them in opposite directions, the assembly being such'as to maintain the wristpins in a common vertical plane during their rotation.

.3. A pump actuating mechanism comprising a pair of spaced guides, an inner 'cross head slidably engaging the inner confronting surfaces of the guides, an outer cross head having portions extending outward beyond the path of movement of the inner cross head and slidably engaging the outer surfaces of the guides, means connecting the said crossheads for simultaneous oppo' site reciprocation thereof, and two piston rods, one rod' being pivotally connected to one of said crossheads and the other rod being pivotally connected to the other of said crossheads for rotation about a common axis of rotation.

WILLIAM UTRECHT. 

